Within a wireless network, feedback information from user equipment (UE) to a control node (eNodeB) is necessary to support various functions. A UE receives an allocation from the eNodeB comprising a plurality of periodic transmission instances for a channel quality indicator (CQI) and a schedule comprising a plurality of periodic transmission instances for a rank indicator (RI), wherein the CQI comprises RI and other CQI fields. The UE then transmits an RI without transmitting the other CQI fields in a transmission instance allocated for both RI and other CQI fields.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method for transmission in a wireless network, comprising: receiving an allocation comprising a plurality of periodic transmission instances for reporting a channel quality indicator (CQI); receiving an allocation comprising a plurality of periodic transmission instances for reporting a rank indicator (RI); and transmitting a first RI report without transmitting a CQI report in a first transmission instance of the plurality of periodic transmission instances allocated for both reporting a RI and reporting a CQI.
2. The method of claim 1 , further comprising receiving a first control message indicating a mode of operation in a transmission instance allocated for both reporting a RI and reporting a CQI, wherein in the indicated mode of operation, the first RI report is transmitted without transmitting a CQI report in the transmission instance.
3. The method of claim 1 , wherein an ACKNAK is transmitted in the same transmission instance as the first RI report, wherein the ACK/NAK is transmitted by modulating a reference signal (RS) of the transmission instance.
4. The method of claim 1 , further comprising transmitting both a second RI report and a CQI report in a second transmission instance of the plurality of periodic transmission instances allocated for both reporting a RI and reporting a CQI.
5. The method of claim 4 , wherein the CQI report includes a modulation and coding scheme (MCS) index associated with a channel coding rate value and modulation scheme, and a precoding matrix indicator (PMI).
6. The method of claim 4 , wherein the CQI report includes only a modulation and coding scheme (MCS) index associated with a channel coding rate value and modulation scheme.
7. The method of claim 4 , wherein a same channel resource is used for the transmission of both the RI report and the other CQI report.
8. The method of claim 7 , wherein the channel resource corresponds to a selected cyclic shift of a designated sequence within a given physical resource block.
9. The method of claim 4 , wherein the second transmission instance comprises a plurality of single carrier orthogonal frequency division multiple access (SC-FDMA) symbols and furthermore, at least one SC-FDMA symbol is used for transmitting the second RI report and at least another SC-FDMA symbol is used for transmitting the CQI report.
10. An apparatus for use in a wireless network, comprising: a transmitter; a receiver; a processor controllably coupled to the transmitter and the receiver; a memory having instructions stored therein, wherein the instructions, when executed by the processor cause the apparatus to: receive an allocation comprising a plurality of periodic transmission instances for reporting a channel quality indicator (CQI); receive an allocation comprising a plurality of periodic transmission instances for reporting a rank indicator (RI); and transmit a first RI report without transmitting the CQI report in a first transmission instance of the plurality of periodic transmission instances allocated for both reporting a RI and reporting a CQI.
11. The apparatus of claim 10 , wherein the memory has further instructions stored therein, wherein the instructions, when executed by the processor cause the apparatus to: receive and store a control message indicating a mode of operation in a transmission instance allocated for both reporting a RI and reporting a CQI; and wherein in a first mode of operation, the apparatus transmits the first RI report without transmitting a CQI report in the transmission instance, and in a second mode of operation, the apparatus transmits both the first RI report and a portion of a CQI report in the transmission instance.
12. The apparatus of claim 10 , where the instructions also cause the apparatus to transmit both a second RI report and a CQI report in a second transmission instance of the plurality of periodic transmission instances allocated for both reporting a RI and reporting a CQI.
13. The apparatus of claim 12 , wherein the CQI report includes a modulation and coding scheme (MCS) index associated with a channel coding rate value and modulation scheme, and a precoding matrix indicator (PMI).
14. The apparatus of claim 12 , wherein the CQI report includes only a modulation and coding scheme (MCS) index associated with a channel coding rate value and modulation scheme.
15. The apparatus of claim 12 , wherein a same channel resource is used for the transmission of both the second RI report and the CQI report, wherein the channel resource corresponds to a selected cyclic shift of a designated sequence within a given physical resource block.
16. The apparatus of claim 12 , wherein the second transmission instance comprises a plurality of single carrier orthogonal frequency division multiple access (SC-FDMA) symbols and furthermore, at least one SC-FDMA symbol is used for transmitting the second RI report and at least another SC-FDMA symbol is used for the transmitting the CQI reports.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
June 26, 2017
June 16, 2020
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